./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 11:51:17,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 11:51:17,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 11:51:17,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 11:51:17,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 11:51:17,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 11:51:17,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 11:51:17,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 11:51:17,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 11:51:17,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 11:51:17,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 11:51:17,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 11:51:17,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 11:51:17,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 11:51:17,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 11:51:17,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 11:51:17,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 11:51:17,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 11:51:17,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 11:51:17,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 11:51:17,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 11:51:17,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 11:51:17,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 11:51:17,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 11:51:17,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 11:51:17,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 11:51:17,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 11:51:17,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 11:51:17,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 11:51:17,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 11:51:17,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 11:51:17,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 11:51:17,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 11:51:17,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 11:51:17,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 11:51:17,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 11:51:17,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 11:51:17,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 11:51:17,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 11:51:17,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 11:51:17,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 11:51:17,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 11:51:17,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 11:51:17,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 11:51:17,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 11:51:17,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 11:51:17,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 11:51:17,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 11:51:17,746 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 11:51:17,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 11:51:17,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 11:51:17,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 11:51:17,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 11:51:17,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 11:51:17,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 11:51:17,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 11:51:17,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 11:51:17,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 11:51:17,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 11:51:17,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 11:51:17,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 11:51:17,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 11:51:17,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 11:51:17,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 11:51:17,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 11:51:17,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 11:51:17,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 11:51:17,749 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 11:51:17,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 11:51:17,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 11:51:17,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 11:51:17,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 [2021-11-04 11:51:17,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 11:51:17,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 11:51:17,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 11:51:17,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 11:51:17,926 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 11:51:17,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-04 11:51:17,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25da45002/85acde7318534bb18e7b0d690924df70/FLAG7ba9c2e69 [2021-11-04 11:51:18,641 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 11:51:18,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-04 11:51:18,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25da45002/85acde7318534bb18e7b0d690924df70/FLAG7ba9c2e69 [2021-11-04 11:51:18,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25da45002/85acde7318534bb18e7b0d690924df70 [2021-11-04 11:51:18,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 11:51:18,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 11:51:18,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 11:51:19,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 11:51:19,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 11:51:19,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 11:51:18" (1/1) ... [2021-11-04 11:51:19,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59998d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:19, skipping insertion in model container [2021-11-04 11:51:19,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 11:51:18" (1/1) ... [2021-11-04 11:51:19,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 11:51:19,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 11:51:21,059 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-04 11:51:21,063 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-04 11:51:21,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 11:51:21,121 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 11:51:21,322 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-04 11:51:21,322 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-04 11:51:21,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 11:51:21,478 INFO L208 MainTranslator]: Completed translation [2021-11-04 11:51:21,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21 WrapperNode [2021-11-04 11:51:21,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 11:51:21,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 11:51:21,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 11:51:21,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 11:51:21,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:21,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:23,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 11:51:23,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 11:51:23,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 11:51:23,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 11:51:23,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:23,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:23,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:23,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:24,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:24,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:24,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:24,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 11:51:24,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 11:51:24,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 11:51:24,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 11:51:24,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (1/1) ... [2021-11-04 11:51:24,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 11:51:24,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 11:51:24,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 11:51:24,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 11:51:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 11:51:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 11:51:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 11:51:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 11:51:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 11:51:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 11:51:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 11:51:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 11:51:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 11:51:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 11:51:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 11:51:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-04 11:51:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 11:51:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 11:51:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 11:51:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 11:51:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 11:51:34,123 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 11:51:34,124 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-04 11:51:34,124 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-04 11:51:34,124 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-04 11:51:34,124 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-04 11:51:34,124 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-04 11:51:34,124 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-04 11:51:34,124 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-04 11:51:34,125 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-04 11:51:34,125 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 11:51:34,125 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 11:51:34,126 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-04 11:51:34,126 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-04 11:51:34,128 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 11:51:34,128 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-04 11:51:34,129 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 11:51:34,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 11:51:34,189 INFO L299 CfgBuilder]: Removed 18514 assume(true) statements. [2021-11-04 11:51:34,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 11:51:34 BoogieIcfgContainer [2021-11-04 11:51:34,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 11:51:34,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 11:51:34,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 11:51:34,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 11:51:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 11:51:18" (1/3) ... [2021-11-04 11:51:34,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8680cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 11:51:34, skipping insertion in model container [2021-11-04 11:51:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:51:21" (2/3) ... [2021-11-04 11:51:34,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8680cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 11:51:34, skipping insertion in model container [2021-11-04 11:51:34,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 11:51:34" (3/3) ... [2021-11-04 11:51:34,209 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-04 11:51:34,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 11:51:34,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-11-04 11:51:34,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 11:51:34,279 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 11:51:34,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-11-04 11:51:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 12060 states, 12034 states have (on average 1.3249127472162208) internal successors, (15944), 12059 states have internal predecessors, (15944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:51:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 11:51:34,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 11:51:34,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 11:51:34,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-04 11:51:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 11:51:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash -918786885, now seen corresponding path program 1 times [2021-11-04 11:51:34,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 11:51:34,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207676375] [2021-11-04 11:51:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 11:51:34,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 11:51:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 11:51:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 11:51:34,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 11:51:34,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207676375] [2021-11-04 11:51:34,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207676375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 11:51:34,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 11:51:34,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 11:51:34,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455067759] [2021-11-04 11:51:34,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 11:51:34,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 11:51:34,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 11:51:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 11:51:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:51:35,025 INFO L87 Difference]: Start difference. First operand has 12060 states, 12034 states have (on average 1.3249127472162208) internal successors, (15944), 12059 states have internal predecessors, (15944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:51:37,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:52:36,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:53:14,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:53:15,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:53:18,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:53:36,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:53:48,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:54:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 11:54:00,093 INFO L93 Difference]: Finished difference Result 29606 states and 39168 transitions. [2021-11-04 11:54:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 11:54:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-04 11:54:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 11:54:00,174 INFO L225 Difference]: With dead ends: 29606 [2021-11-04 11:54:00,174 INFO L226 Difference]: Without dead ends: 16193 [2021-11-04 11:54:00,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:54:00,211 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 7446 mSDsluCounter, 15674 mSDsCounter, 0 mSdLazyCounter, 30829 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132807.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7446 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 30851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 223.22ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 30829 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142588.18ms IncrementalHoareTripleChecker+Time [2021-11-04 11:54:00,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7446 Valid, 636 Invalid, 30851 Unknown, 0 Unchecked, 223.22ms Time], IncrementalHoareTripleChecker [21 Valid, 30829 Invalid, 1 Unknown, 0 Unchecked, 142588.18ms Time] [2021-11-04 11:54:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16193 states. [2021-11-04 11:54:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16193 to 16157. [2021-11-04 11:54:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16157 states, 16131 states have (on average 1.3032050089889033) internal successors, (21022), 16156 states have internal predecessors, (21022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:54:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16157 states to 16157 states and 21022 transitions. [2021-11-04 11:54:00,641 INFO L78 Accepts]: Start accepts. Automaton has 16157 states and 21022 transitions. Word has length 89 [2021-11-04 11:54:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 11:54:00,641 INFO L470 AbstractCegarLoop]: Abstraction has 16157 states and 21022 transitions. [2021-11-04 11:54:00,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:54:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 16157 states and 21022 transitions. [2021-11-04 11:54:00,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-04 11:54:00,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 11:54:00,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 11:54:00,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 11:54:00,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-04 11:54:00,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 11:54:00,653 INFO L85 PathProgramCache]: Analyzing trace with hash -37629154, now seen corresponding path program 1 times [2021-11-04 11:54:00,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 11:54:00,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251089477] [2021-11-04 11:54:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 11:54:00,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 11:54:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 11:54:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 11:54:00,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 11:54:00,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251089477] [2021-11-04 11:54:00,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251089477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 11:54:00,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 11:54:00,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 11:54:00,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818211279] [2021-11-04 11:54:00,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 11:54:00,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 11:54:00,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 11:54:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 11:54:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:54:00,916 INFO L87 Difference]: Start difference. First operand 16157 states and 21022 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:54:02,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:54:11,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:55:57,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:56:17,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:56:19,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:56:34,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:56:43,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:56:51,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 11:56:51,308 INFO L93 Difference]: Finished difference Result 42539 states and 55417 transitions. [2021-11-04 11:56:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 11:56:51,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-04 11:56:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 11:56:51,378 INFO L225 Difference]: With dead ends: 42539 [2021-11-04 11:56:51,379 INFO L226 Difference]: Without dead ends: 26490 [2021-11-04 11:56:51,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:56:51,401 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10742 mSDsluCounter, 14226 mSDsCounter, 0 mSdLazyCounter, 28816 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147358.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10742 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 176.47ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28816 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 168033.38ms IncrementalHoareTripleChecker+Time [2021-11-04 11:56:51,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10742 Valid, 0 Invalid, 28826 Unknown, 0 Unchecked, 176.47ms Time], IncrementalHoareTripleChecker [9 Valid, 28816 Invalid, 1 Unknown, 0 Unchecked, 168033.38ms Time] [2021-11-04 11:56:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26490 states. [2021-11-04 11:56:51,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26490 to 26148. [2021-11-04 11:56:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26148 states, 26122 states have (on average 1.3062935456703162) internal successors, (34123), 26147 states have internal predecessors, (34123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:56:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26148 states to 26148 states and 34123 transitions. [2021-11-04 11:56:51,949 INFO L78 Accepts]: Start accepts. Automaton has 26148 states and 34123 transitions. Word has length 101 [2021-11-04 11:56:51,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 11:56:51,950 INFO L470 AbstractCegarLoop]: Abstraction has 26148 states and 34123 transitions. [2021-11-04 11:56:51,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:56:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 26148 states and 34123 transitions. [2021-11-04 11:56:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 11:56:51,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 11:56:51,960 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 11:56:51,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 11:56:51,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-04 11:56:51,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 11:56:51,961 INFO L85 PathProgramCache]: Analyzing trace with hash 436110901, now seen corresponding path program 1 times [2021-11-04 11:56:51,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 11:56:51,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194832442] [2021-11-04 11:56:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 11:56:51,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 11:56:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 11:56:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 11:56:52,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 11:56:52,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194832442] [2021-11-04 11:56:52,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194832442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 11:56:52,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 11:56:52,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 11:56:52,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086343155] [2021-11-04 11:56:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 11:56:52,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 11:56:52,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 11:56:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 11:56:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:56:52,251 INFO L87 Difference]: Start difference. First operand 26148 states and 34123 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:56:54,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:57:18,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:58:37,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:58:57,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:59:34,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:59:44,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:59:52,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:59:54,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:00:19,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:00:28,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:00:31,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:00:43,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:00:43,265 INFO L93 Difference]: Finished difference Result 78078 states and 101941 transitions. [2021-11-04 12:00:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:00:43,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-04 12:00:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:00:43,387 INFO L225 Difference]: With dead ends: 78078 [2021-11-04 12:00:43,387 INFO L226 Difference]: Without dead ends: 52038 [2021-11-04 12:00:43,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:00:43,432 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14363 mSDsluCounter, 14360 mSDsCounter, 0 mSdLazyCounter, 32504 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187800.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14363 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 180.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 227985.17ms IncrementalHoareTripleChecker+Time [2021-11-04 12:00:43,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14363 Valid, 0 Invalid, 32505 Unknown, 0 Unchecked, 180.10ms Time], IncrementalHoareTripleChecker [0 Valid, 32504 Invalid, 1 Unknown, 0 Unchecked, 227985.17ms Time] [2021-11-04 12:00:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52038 states. [2021-11-04 12:00:44,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52038 to 51914. [2021-11-04 12:00:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51914 states, 51888 states have (on average 1.3071423065063212) internal successors, (67825), 51913 states have internal predecessors, (67825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 12:00:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51914 states to 51914 states and 67825 transitions. [2021-11-04 12:00:44,632 INFO L78 Accepts]: Start accepts. Automaton has 51914 states and 67825 transitions. Word has length 130 [2021-11-04 12:00:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:00:44,634 INFO L470 AbstractCegarLoop]: Abstraction has 51914 states and 67825 transitions. [2021-11-04 12:00:44,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 12:00:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 51914 states and 67825 transitions. [2021-11-04 12:00:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 12:00:44,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:00:44,640 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:00:44,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 12:00:44,641 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-04 12:00:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:00:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1697028151, now seen corresponding path program 1 times [2021-11-04 12:00:44,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:00:44,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980879350] [2021-11-04 12:00:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:00:44,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:00:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:00:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 12:00:44,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:00:44,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980879350] [2021-11-04 12:00:44,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980879350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:00:44,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:00:44,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:00:44,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540571246] [2021-11-04 12:00:44,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:00:44,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:00:44,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:00:44,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:00:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:00:44,901 INFO L87 Difference]: Start difference. First operand 51914 states and 67825 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 12:00:46,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:01:21,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:01:50,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:01:52,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:01:54,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:01:56,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:02:42,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:02:46,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:03:02,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:03:56,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:04:01,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:04:23,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:04:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:04:59,718 INFO L93 Difference]: Finished difference Result 118034 states and 154355 transitions. [2021-11-04 12:04:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:04:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-04 12:04:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:04:59,854 INFO L225 Difference]: With dead ends: 118034 [2021-11-04 12:04:59,854 INFO L226 Difference]: Without dead ends: 66228 [2021-11-04 12:04:59,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:04:59,921 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6523 mSDsluCounter, 14429 mSDsCounter, 0 mSdLazyCounter, 35513 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207832.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6523 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 184.61ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35513 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251982.28ms IncrementalHoareTripleChecker+Time [2021-11-04 12:04:59,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6523 Valid, 0 Invalid, 35532 Unknown, 0 Unchecked, 184.61ms Time], IncrementalHoareTripleChecker [15 Valid, 35513 Invalid, 4 Unknown, 0 Unchecked, 251982.28ms Time] [2021-11-04 12:04:59,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66228 states. [2021-11-04 12:05:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66228 to 66180. [2021-11-04 12:05:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66180 states, 66154 states have (on average 1.3084469571000998) internal successors, (86559), 66179 states have internal predecessors, (86559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 12:05:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66180 states to 66180 states and 86559 transitions. [2021-11-04 12:05:01,199 INFO L78 Accepts]: Start accepts. Automaton has 66180 states and 86559 transitions. Word has length 130 [2021-11-04 12:05:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:05:01,200 INFO L470 AbstractCegarLoop]: Abstraction has 66180 states and 86559 transitions. [2021-11-04 12:05:01,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 12:05:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 66180 states and 86559 transitions. [2021-11-04 12:05:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-04 12:05:01,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:05:01,206 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:05:01,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 12:05:01,207 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-04 12:05:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:05:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1318979706, now seen corresponding path program 1 times [2021-11-04 12:05:01,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:05:01,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327109427] [2021-11-04 12:05:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:05:01,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:05:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:05:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 12:05:01,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:05:01,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327109427] [2021-11-04 12:05:01,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327109427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:05:01,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:05:01,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:05:01,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513991105] [2021-11-04 12:05:01,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:05:01,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:05:01,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:05:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:05:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:05:01,452 INFO L87 Difference]: Start difference. First operand 66180 states and 86559 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 12:05:03,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15